diff --git a/bindings.c b/bindings.c
--- a/bindings.c
+++ b/bindings.c
@@ -4099,7 +4099,7 @@ struct devinfo* container_dev_read(pid_t pid) {
 			goto child_out;
 		}
 		while ((ptr = readdir(dir)) != NULL) {
-			if (ptr->d_type != DT_BLK && ptr->d_type != DT_CHR) {
+			if (ptr->d_type != DT_BLK) {
 				continue;
 			}
 			memset(fpath, 0, sizeof(fpath));
@@ -4167,10 +4167,20 @@ void free_devinfo_list(struct devinfo *ptr)
 	}
 }
 
+static bool need_record_diskstats(unsigned int major, unsigned int minor)
+{
+	//only support device which major is 253.
+	if (major == 253) {
+		return true;
+	}
+	return false;
+}
+
 static int proc_diskstats_read(char *buf, size_t size, off_t offset,
 		struct fuse_file_info *fi)
 {
 	char dev_name[72];
+	char tmp_dev_name[72];
 	struct fuse_context *fc = fuse_get_context();
 	struct file_info *d = (struct file_info *)fi->fh;
 	struct devinfo *container_devinfo = NULL, *ptr;
@@ -4233,6 +4243,7 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
 	while (getline(&line, &linelen, f) != -1) {
 		ssize_t l;
 		char lbuf[256];
+		bool match = false;
 
 		memset(dev_name, 0, sizeof(dev_name));
 		i = sscanf(line, "%u %u %71s", &major, &minor, dev_name);
@@ -4240,11 +4251,16 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
 			continue;
 		for (ptr = container_devinfo; ptr != NULL; ptr = ptr->next) {
 			if (major == ptr->major && minor == ptr->minor) {
-				strncpy(dev_name, ptr->name, 71);
+				snprintf(dev_name, sizeof(dev_name), "%s", ptr->name);
 				dev_name[71] = '\0';
+				match = true;
 			}
 		}
 
+		if (!match) {
+			continue;
+		}
+
 		get_blkio_io_value(io_serviced_str, major, minor, "Read", &read);
 		get_blkio_io_value(io_serviced_str, major, minor, "Write", &write);
 		get_blkio_io_value(io_merged_str, major, minor, "Read", &read_merged);
@@ -4274,8 +4290,16 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
 			snprintf(lbuf, 256, "%u       %u %s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
 				major, minor, dev_name, read, read_merged, read_sectors, read_ticks,
 				write, write_merged, write_sectors, write_ticks, ios_pgr, tot_ticks, rq_ticks);
-		else
+		else if (need_record_diskstats(major, minor)) {
+			sscanf(line, "%u %u %71s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
+				&major, &minor, tmp_dev_name, &read, &read_merged, &read_sectors, &read_ticks,
+				&write, &write_merged, &write_sectors, &write_ticks, &ios_pgr, &tot_ticks, &rq_ticks);
+			snprintf(lbuf, 256, "%u       %u %s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
+				major, minor, dev_name, read, read_merged, read_sectors, read_ticks,
+				write, write_merged, write_sectors, write_ticks, ios_pgr, tot_ticks, rq_ticks);
+		} else {
 			continue;
+		}
 
 		l = snprintf(cache, cache_size, "%s", lbuf);
 		if (l < 0) {